Metal weather-strip.



' PATENTBD OCT. 2, 1906.

J. c. Mo MAHON.

METAL WEATHER STRIP.

APPLIUATION FILED APR. 21, 1905.

To allwhom, it may concern:

- UNITED sT E s PATENT onnron.

JOSIAH o. MoMAHON, or ALLEGHENY, PENNSYLVANIA, AssIeNoR To, GHAMBERLINMETAL WEATHER STRIP COMPANY, OF DETROIT,

V MICHIGAN.

'METAL WEATHER-STRIP.

Be' it known thatI, JosIAiI C. MoMAHoN,

a citizen of the United States, residing at Allegheny, in the county-ofAllegheny and State of Pennsylvania, have invented certain new anduseful Improvements in Metal Weather-Strips, of which the following is aspecification, reference-being had-therein to the accompanying drawings.

This invention relates to weather-strips, and has for its object theimprovement of that type of fixture wherein is employed a strip having aprojecting sealing rib or flange adapted to enter a complementaryreceiving groove in a frame, window, or door according to the member toWhich the flanged strip is secured. i

The more ordinary method of applying the strip referred to is to fastenthe same to the surrounding edges of a window frame, whereby its sealingrib or flange projects into and works within a suitable groove orgrooves in a sliding sash. Heretofore no arrangement has been affordedwhereby to re-- duce the extended frictional engagement between thesides of the scalingrib or flange and the confining-walls of the groovewithin which the same works, thereby facilitating the easy manipulationof the sash, norhas any provision been made for maintaining an Yintimate sealing relation between said sides window or door, as the casemay be, or the groove, that t tion embraces a strip provided with asealing groove or way formed by an approximately of the rib or flangeand the edges of the confining groove or way whereby a constant contactof protecting parts is assured irrespective of any swelling or shrinkageof the frame thereof.

It is to provide a fixture possessing the u foregoing desirablecharacteristics, as also others, among which may be noted the preventionof any, objectionable binding action between the arts or wearing away ofthe e present invention has been devised.

A convenient embodiment of the invenrib or flange designed to enter areceiving U-shapedspringmetal insert adapted to be secured wit in agroove in the frame or sash,

the flanges of said insert normally bending inwardly to impinge at theirfree edges upon the sides of the sealing rib or flange, 'sothatSpecification of Letters Patent. Application filed April 21,1905.SerialNo. 256.703.

Patented Oct. 2, 190's.

the surface engagement between. the opposing parts is minimized, whileat the same time a constant sealing contact is maintained. Thisembodiment of the invention 'is illustrated in the accompanying drawingsfor the purpose of facilitating a clear understanding of the invention,and the novel details of construction and. arrangement ofparts will beobvious upon aninspection thereof when read in connection with thedeperspective view of, a window frame and sash, showing my improvedweather-strip ape. plied thereto. verse sectional view through a sash,strip, and frame. Fig. 3 is a detail perspective view of separatedportions of the flanged Fig. 2 is an enlarged transstrip andspring-metal insert constituting the receiving groove or way therefor.Fig. 4 is a sectional view similar to Fig. 2, illustrating aslightly-modified forin of the springmetal insert, the strip in thisinstance being door or sash, it being understood that the 'shown asapplied. to the edge of a swinging I rounded-edge insert embodiedin'this form of the fixture is also particularly adapted for use atthebottom and top of a sash-frame and at the meeting-rails of -adj oiningor overlapping sashes; and'Fig. 5 -is' a detail crosssec-tional viewillustrative of 'a second embodiment. of the invention.

Referrin more'specificallv to the drawv iings, and or the present withreference to the first three views thereof, in which like referencecharacters refer to corresponding 1prarts, Adesignates a sliding sash,-B a window ame or casing, and Cthe groove or runway of the frame withinwhich the sash works up and down in the usual manner. In the edge of thesash, preferably the'surface (1 thereof, which opposes-the base c of therunway, I form a groove D, the side walls (1 of which :extend outwardlyin substantially parallel planes or in planes'diverging outwardly, as

shown in Fig. 2, and within this groove 1 mount 'a spring-metal insertE, the same in cross-section approximating a pear shape and beingmovably secured in place through the medium of tacks e, loosely engagingthe bend 6 thereof and embedded in the material of the sash. The flangesof the insert just defined have a permanent tendency to spring r setforth it is to be noted that owing inwardly or approach, whereby theirfree i edges constantly impinge upon the opposite sides of a flange orrib F, arranged to project into the groove'j" formed between the flangesol' the insert, and said rib or flange being mounted in the base of therunway or groove of the sash-frame in any convenient manner,conveniently by means of base-flange f, tacked down or held in place byoverhanging portions of the sash-frame. As shown, these basedlanges andthe sealing rib or flange are formed of sheet metal doubled upon itselfafter the fashion well known in this art. I have, however, found thatthe special type or rib shown is peculiarly adapted for use inconneetion with my spring-insert, inasmu'ch as such rib has a bulged orlaterally-enlarged edge (see particularly Figs. 2 and 3) which when thesash moves away from the frame incident to shrinkage the sealing contactbetween the edges of the spring-arms of the insert and the side walls ofthe rib or flange is increased, as will be readily understood. It willbe noted that the engagement of the flanges of the spring-inscrt withthe sealing rib or flange is substantially a line-contact at each sideof the latter, whereby rubbing frictional contact incident to theraising and lowering of the sash is minimized, while at the same timethe sealing effect secured by the cooperation of said insert and thesealing rib or flange will be maintained, notwithstanding the warping orshrinkage of the sash or frame, until the parts become so separated thatthe sealing rib or flange is entirely withdrawn from the s ace withinthe insert, and the possibilities 0 any such separation are extremelyremote, and as a matter of fact it is doubtful if such a condition everarises. In some cases where the members carrying the springinsert andthe sealing rib or flange are caused to approach or recede one relativeto the other-for instance, as in the swinging sash or door-2 and itsframe 3 illustrated in Fig. 4- it is desirable that the free edges ofthe insert 4 be rounded or turned outwardly, as at 5, to facilitate theentrance therebetween of the sealing rib or flange 6, carried by saidswingmg sash or door as the same is closed. In both of the forms ofspring-inserts heretofore to the rounded configuration of the connectlngportion and the loose fitting of the securingtacks said inserts may havea limited laterally-tilting or rocking movement to preserve 1ts normaloperative relation to the sealingstrip.

With reference now to Fig. 5, it will be seen that the spring-insert inthis instance is composed of two spring members or strips G, theirinner; edges being outwardly bent or flaring, as at g, while theirintermediate ortions diverge outwardly to the mouth 0 the groove andterminate in ofl'set flanges, the

latter being tacked to the edge of the sash, a at g. i

1. The combination'with a frame member and a sash member mounted tocooperate therewith, one of said members being provided with a groove,of a weather-strip interposed between said members comprising twoopposing sheet-metal parts one of said parts having a securing-flangeand an outwardlyextending rib arranged to project into said groove, thethickness of said rib being con siderably less than the width of saidgroove, and the other of said parts consisting of a resilient memberapproximately pear-shaped in cross-section having spring-flanges free attheir edges and contacting with the side surfaces of the rib, and meansfor securing said resilient member in the groove with its con nectingedge at the base of the groove whereby spaces are left between the sidewalls of the groove and the free ends of the springflanges and betweenthe edge of the rib and the inner sides of said flanges within which theparts may 'play in either lateral direction.

2. The combination with a frame member and a sash member mounted tocooperate therewith, one of said members being provided with a groove,of a weather-strip interposed between said members comprising twoopposing sheet-metal parts one of said parts having a securing-flangeand an outwardlyextending rib arranged to roject into said groove, thethickness of said rib being considerably less than the width of saidgroove,

and the other of said parts consisting of a resilient memberapproximately pear-shaped in cross-section having spring-flanges free attheir edges and contacting with the side surfaces of the rib, and meansfor securing said resilient member in the groove-with its con nectingedge at the base of the groove whereby spaces are left between the sidewalls of the groove and the free ends of the springflanges and betweenthe edge of the rib and the inner sides of said flanges within which theparts may play in either lateral direction, and the relatively wide orconnected edge of the resilient pear-shapedmember being of transverseformation permitting it to bodily rock in either lateral direction.

3. The combination with a frame member and a sash member mounted tocooperate therewith, one of said members being provided with a groove,of a weather-strip interposed between said members comprising twoopposing sheet-metal parts one of said parts having a securin flange andan outwardlyextending rib of increasing thickness ar ranged to projectinto said groove, the maximum thickness of said rib being considerablyless than the width of said groove, and the other of said partsconsisting of a resilient member approximately pear-shaped in cross- IIO-e.a2,15o f 8 section having spring-flanges free at their sides of saidflanges which the partsedges and contactingwith the side surfaces maiyplayin either lateral direction; 10 of the rib, and means for securingsaid resilin testimony whereof I aflix my signature ent member in thegroove with its connecting. in presence of two witnesses.

edge at the base of the groove whereby JOSIAH C. MoMAHQN. spaces areleft between the side walls of the Witnesses: A groove andthe free endsof the spring-flanges EDWARD A J. CBAIG,

and between the edge of the, rib and the inner JAMEs-H. Poerr.

